CSS

Question 1

What are the names of the individual pieces of a CSS rule?

Answer 1

Selector, declaration block, property, value

Question 2

In CSS, how do you select elements by their class attribute?

Answer 2

By using a “.” before the class name

Question 3

In CSS, how do you select elements by their type?

Answer 3

Just use the element name

Question 4

In CSS, how do you select an element by its id attribute?

Answer 4

By using a “#” before the ID name

Question 5

Name three different types of values you can use to specify colors in CSS.

Answer 5

Hex, RGB function, color name

Question 6

What CSS properties make up the box model?

Answer 6

Margin, padding, and border.

Question 7

Which CSS property pushes boxes away from each other?

Answer 7

Margin

Question 8

Which CSS property add space between a box’s content and its border?

Answer 8

Padding

Question 9

What is a pseudo-class?

Answer 9

A class that is applied by the browser when certain criteria is met

Question 10

What are CSS pseudo-classes useful for?

Answer 10

Highlight a user’s position or action, make pages more interactive

Question 11

Name two types of units that can be used to adjust font-size in CSS.

Answer 11

Pixels, Ems

Question 12

What CSS property controls the font used for the text inside an element?

Answer 12

font-family

Question 13

What is the default flex-direction of a flex container?

Answer 13

Row

Question 14

What is the default flex-wrap of a flex container?

Answer 14

Nowrap

Question 15

Why do two div elements “vertically stack” on one another by default?

Answer 15

Because they’re block elements

Question 16

What is the default flex-direction of an element with display: flex?

Answer 16

Row (left to right)

Question 17

What is the purpose of a container class in the layout system?

Answer 17

To hold, control and style the HTML elements

Question 18

What is the purpose of a row class?

Answer 18

To hold columns

Question 19

What is the default value for the position property of HTML elements?

Answer 19

Static

Question 20

How does setting position: relative on an element affect document flow?

Answer 20

It doesn’t do anything without any box offset properties

Question 21

How does setting position: relative on an element affect where it appears on the page?

Answer 21

It moves based on where it normally sat to begin with.

Question 22

How does setting position: absolute on an element affect document flow?

Answer 22

Removes it from flow and any space it took up

Question 23

How does setting position: absolute on an element affect where it appears on the page?

Answer 23

Non-static parents

Question 24

How do you constrain an absolutely positioned element to a containing block?

Answer 24

Set a value for the position property other than static

Question 25

What are the four box offset properties?

Answer 25

Top, bottom, left, right

Question 26

What are the four components of “the Cascade”?

Answer 26

Source order, Specificity, Importance, Inheritance

Question 27

What does the term “source order” mean with respect to CSS?

Answer 27

Items in a container are sorted by ascending order value and then by their source code order.

Question 28

How is it possible for the styles of an element to be applied to its children as well without an additional CSS rule?

Answer 28

Inheritance

Question 29

List the three selector types in order of increasing specificity.

Answer 29

Element, class, ID

Question 30

Why is using !important considered bad practice?

Answer 30

It overrides other rules and can be a pain in the ass when debugging

Question 31

What does the transform property do?

Answer 31

The transform CSS property lets you rotate, scale, skew, or translate an element. It modifies the coordinate space of a CSS element visual formatting model.

Question 32

Give four examples of CSS transform functions.

Answer 32

Matrix, translate, scale, rotate, skew

Question 33

The transition property is shorthand for which four CSS properties?

Answer 33

Delay, duration, property, timing function

Question 34

Give two examples of media features that you can query in an @media rule.

Answer 34

Min-width, min-height

Question 35

What is the affect of setting an element to display: none?

Answer 35

It hides the element from view

Question 36

What is a breakpoint in responsive Web design?

Answer 36

the “point” at which a website’s content and design will adapt in a certain way in order to provide the best possible user experience.

Question 37

What is the advantage of using a percentage (e.g. 50%) width instead of a fixed (e.g. px) width for a “column” class in a responsive layout?

Answer 37

The proportions will remain the same regardless of screen size or device type

Question 38

If you introduce CSS rules for a smaller min-width after the styles for a larger min-width in your style sheet, the CSS rules for the smaller min-width will “win”. Why is that?

Answer 38

Source order. Because the lower the rule is in the CSS, the more weight they have.